The basic assumptions, equations and boundary conditions for bottom hole assembly (BHA) analysis were discussed.

讨论了下部钻具组合分析的基本假设、基本方程和相应的边界条件。

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In this article, the principal factors affecting hole curvature are analysed, the principle of anti-deflecting packed hole assembly design is discussed.

本文分析了影响井眼曲率的主要因素，论述满眼防斜钻具组合设计的原则。

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A mechanical model of bottom hole assembly (BHA) with eccentric bits is established and the solution of this model was given by means of numerical method.

采用静力分析的方法，建立了偏心钻头底部钻具组合的力学模型，并完成了对力学模型的求解。

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For example, if your business involves putting together packets of information for clients, maybe you have one station specifically for printing, and another that has all the hole punches, staplers, folders, and other assembly materials, and still a third station for preparing outgoing mail.

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